Door lock



June 7, 1955 Filed Dec. 8, 1952 F. .1. RUSSELL DOOR LOCK 10 Sheets-Sheetl FRED J. RUSSELL INVENTOR HUEBNER, BEEHL ER WORRL'L a HE/az/a, B),ATTORNEYS.

June 7, 1955 RUSSELL 2,709,911

DOOR LOCK Filed Dec. 8, 1952 10 Sheets-Sheet 2 a0 *1 Z7 f! 19 2a 15 is IJ5 J "1:97.; i I I 37 HUE ENE R1 BEEHL ER,

WORRE' L 8 HERZ/G,

A TTORWEKS'.

June 7, 1955 F. J. RUSSELL 2,709,911

DOOR LOCK Filed Dec. 8, 1952 10 Sheets-Sheet E- FRED J. RUSSELL INVENTORHUEBNER, BEEHLER;

WORREL 8 HERZ/G, By A TTORNEKS.

June 7, 1955 F. J. RUSSELL 2,709,911

DOOR LOCK Filed Dec. 8, 1952 l0 Sheets-Sheet 4 if V l 34 llllll I I I! lq I lllllllllll "III/I FRED J. RUSSELL IN V EN TOR HUEBNER, BE'EHLER,WORREL 8 HEPZ/G,

ATTORNEYS.

June 7, 1955 F. J. RUSSELL DOOR LOCK .10 Sheets-Sheet 5 Filed Dec. 8,1952 FRED J. RUSSELL INVENTOR HUEBNER, BEEHL ER, -WORREL a HERZIG June7, 1955 F. J. RUSSELL 2,709,911

DOOR LOCK Filed Dec. 8, 1952 10 Sheets-Sheet 6 10 Sheets-Sheet 8 o w mmY 14 4 uR mmm 5 u E m E E a 2 a w a. $N %m 2 r 2 U E O V 3r N R T 'I ELAv J NE 0. am M WW m @m P F. J. RUSSELL DOOR LOCK June 7, 1955 Filed Dec.8, 1952 F. J- RUSSELL June 7, 1955 DQOR LOCK .10 Sheets- Shet 10 FiledDec. 8, 1952 7% &

FRED J. RUSSELL INVENTOR.

'HUEBNER,8EEHL5R WORREL a HERZ/G, BY 2 a ATTORNEYS:

States DOOR LOCK Fred J. Russell, Los Angeles, Calif.

Application December 8, 1952, Serial No. 324,715

37 Claims. (Cl. lit-447) The application is a continuation-in-part ofcopending.

applications Serial No. 108,136, filed August 2, 1949, now abandoned,and Serial No. 275,736, filed March 10, 1952, now abandoned.

The invention here involved is more especially devoted to a door lockfrequently referred to as a privacy lock or screen. door set wherein thedoor can be temporarily locked from the inside by manipulation of thehandle or some part of the handle so as to lock the door againstinadvertent opening from the outside but with the parts so arranged thatthe door can be readily opened from the inside merely by turning theknob so as to release the mechanism. Following current requirements, thelock may be so arranged that when used as a privacy lock for a bathroomdoor, it can be opened from the outside if need be by some instrument,such as either a wire, screw driver, or other simple instrument to gainaccess to the inside under special circumstances or, if preferred, bythe usual tumbler lock and key.

it is therefore among the objects of the invention to provide a new andimproved privacy lock set which is simple in its construction andassembly and which incorporates a new mechanism to achieve the temporarylocking of the door and its ready release by manipulation of the insideknob.

Another object of the invention is to provide a new and improved privacylock set which incorporates a series of elements on the spindle of suchcharacter that by relatively little change and following the samegeneral principle of construction and operation the door may betemporarily locked either by pushing the inside knob'inward or bypulling it away from the door, and then turning it a small fraction of aturn to temporarily lock it in a privacy locked position but subject toready release by reversing the same short turn, after which the knobwill be returned automatically to its initial unlocked position.

Still another object of the invention is to provide a new and improvedprivacy lock set which can be made particularly compact sufiicient tohave it fit doors of minimum thickness as well as being operable withdoors of conventional or greater thickness without any change whatsoeverin the structure of the lock set.

Also included among the objects of the invention is to provide a new andimproved privacy lock set which is relatively inexpensive tomanufacture, which incorporates parts which can be made to such a broadtolerance that all parts are readily interchangeable without sacrificingthe smoothness and dependability of operaassociated therewith usuallyatent O Patented June 7, 1 355 tion of the device and also to provide aprivacy lock set which is easy to assemble at the factory as well assimple to install in the door by persons relatively unskilled in theinstallation of lock hardware.

Still another object of the invention is to produce a door lock of thecharacter described which cannot be unlocked by jarring it, even with anexcessive blow.

An object of one form of the invention is to produce a lock of thegeneral character referred to wherein the lock can be put into lockedposition by an inward thrust of the inner knob assembly followed by aslight rotation thereof, the inward thrust bringing a tabbed lock washerinto locking engagement with a binding plate, and the rotationalmovement shifting a slotted retaining element into engagement with stopson a retaining washer by which the inner knob assembly is retained inlooking position, and can be released to unlocking position only by areverse rotation of the inner knob or actuation of a spindle by thecylinder lock in the outer knob, and in which the locking engagement ofthe retaining element with the retaining ring is such that an externalblow or jarring will not disengage the parts.

The objects include moreover the provision of a new and improved privacylock set with the locking such that it is locked and also unlocked fromthe inside by merely rotating the handle so that persons relativelyunfamiliar with locks of this kind would instinctively by turning thehandle lock or unlock it, the lock set being further so constructed thatonce unlocked by rotation of the inside knob, the lock set must berelocked by the same rotation of the handle and would not automaticallylook upon a closing of the door.

With these and other objects in view, the invention consists in theconstruction, arrangement and combination of the various parts of thedevice whereby the objects contemplated are attained as hereinafter setforth, pointed out in the appended claims and illustrated in theaccompanying drawings.

In the drawings:

Figure 1 is a longitudinal sectional view of a complete lock setinstalled in a door.

Figure 2 is a longitudinal sectional view of the lock set or" Figure 1taken on a horizontal plane.

Figure 3 is a longitudinal sectional view or" one form of the insideknob assembly and associated parts of a design wherein the knob pullsout in order to place it in locked position, the figure showing theparts in unlocked position.

Figure 4 is a view similar to Figure 3 showing the parts of Figure 3 inlocked position.

Figure 5 is an exploded view of the form of device illustrated inFigures 3 and 4.

Figure 6 is a longitudinal sectional view of the inside knob assemblyand associated parts of a construction which requires that the knob bepushed in for locking the door, Figure 6 being one showing the knobassembly in unlocked position.

Figure 7 is a view similar to Figure 6 showing the parts of Figure 6 inlocked position.

Figure 8 is an exploded view of the construction illustrated in Figures6 and 7.

Figure 9 is a longitudinal sectional view of an embodiment of the deviceconstructed so that it can be unlocked by a key inserted in the outsideknob assembly.

Figure 10 is an enlarged longitudinal sectional view showing details ofa key actuated spindle for unlocking the device.

Figure 11 is a cross-sectional view through the device on the line 1111of Figure 10.

Figure 12 is an exploded view of a mechanism facilitating unlocking of.the device by the key actuated spindle.

Figure 13 is a sectional elevational view of a door lock embodying theprinciples of the invention showing the parts in unlocked position.

Figure 14 is a sectional view of part of the outer knob assembly takenon the line 1414 of Figure 13.

Figure 15 is a fragmentary sectional view taken on the line 1515 ofFigure 13.

Figure 16 is a sectional view taken on the line 1616 of Figure 13.

Figure 17 is a somewhat enlarged sectional angular plan view of the doorlock shown in Figure 13 with the inner knob assembly predominating andomitting most of the outer knob assembly. The figure is taken on theline 1717 of Figure 16, and the parts are shown in unlocked position.

Figure 18 is a fragmentary sectional view taken on the line Iii-18 ofFigure 13.

Figure 19 is a fragmentary sectional view taken on the line 19-19 ofFigure 13.

Figure 20 is a sectional view through the inner knob taken on the line2020 of Figure 13.

Figure 21 is a view generally similar to Figure 16 but more fractionalin nature illustrating parts of the inner knob assembly with the lock ininitial locked position but prior to rotation of the inner knob forholding the lock in locked position.

Figure 22 is a sectional view taken on the line 2222 of Figure 21.

Figure 23 is a view similar to Figure 21 wherein the inner knob has beenturned to retain the lock in locked position.

Figure 24 is a fragmentary section taken on the line 24-44 of Figure 23.

Figure 25 is an exploded perspective view of several axially alignedcooperating parts of the inner knob assembly and binding plate.

Figure 26 is an exploded perspective view of the parts forming a lostmotion washer assembly incorporated in the knob assemblies.

Figure 27 is a partial perspective view of the inside spindle and atubular latch actuating spindle partly enclosing the same.

Figure 28 is a perspective view illustrating a different form of bindingplate and locking washer.

Pull release lock In a form of the device chosen to illustrate theprinciple involved, there is shown a door 10 in section having atransverse aperture 11 therein for reception of the operating assembliesand having an edgewise extending bore 12 designed to connect to theaperture 11 and to receive the latch. These two holes, namely, theaperture 11 and bore 12 are the only two apertures which need be cutinto the door for the reception and mounting of the lock. Both may becircular holes made with a bit and brace.

The lock comprises in general an inner operating assembly 13, an outeroperating assembly 14, spindles and a latch mechanism 15 which extendsto a location in axial alignment with the inner and outer operatingassemblies 13 and 14 respectively so that the latch mechanism may bemanipulated by the operating assemblies. The latch mechanism 15 is ofconventional construction, details of which have been omitted forsimplifying the description of the invention here involved. Moreparticularly, and as illustrated to larger scale in Figure 3, the inneroperating assembly 13 is here shown as comprising an inner knob 16having a shank or spindle 17 non-rotatably secured thereto by theswaging of same over a washer 18. A binder plate 20 is here shownserving also as a rose insert on the outside of which is fitted arosette 21. Centrally disposed relative to the binder plate and therosette is a bushing 22 within which portion the shank 19 of reduceddiameter is adapted to rotate.

As shown in Figures 3 and 4 but as is more readily discernible in Figure5, the shank diameter 19 has a fiattened portion 23 and a substantiallyannular recess 24 near the end adapted to receive a snap ring 25. Thesnap ring is designed to retain upon the shank parallel discs 26 and 27and a coil spring 23. The disc 26 has an aperture 29 therein on one sideof which is flat 30 designed to engage the flat face 23 of the shank 19sothat the disc 26 is non-rotatably mounted upon the shank and therefore turned when the inner knob 16 is turned. The disc 27 has a circularaperture 31 therein which fits freely and rotatably about the portion ofthe shank 19 and therefore cannot be turned by rotation of the knobexcept through an interlocking arrangement which will be presentlydescribed in detail. Another disc 32 is provided with a square hole 33by means of which it is nonrotatably mounted upon a square spindle 34.The square spindle 34 has a recess 35 at its inside end within which canbe mounted a snap washer 36 so as to lock the spindle within the innerknob 16. The opposite end of the square spindle has a rounded extension37. Adjacent the rounded extension there is mounted a spring-keepingwasher 38 for retaining a spring 39 which in turn is adapted to bearagainst the outer face of the disc 32. A dished part or spider 40 isprovided with legs 41 and feet 42 in which are slots 43 by means ofwhich the spider may be held non-rotatable with respect to the binderplate 20. This is accomplished by lodging flanges 44 of the binder platewithin the slots 43.

Reference will first be made to the relationship of the parts asillustrated in Figure 3 which is the unlocked position. In that positionlong legs 45 of the disc 32 extend through arcuate slots 46 of the disc26 and recesses 47 of the disc 27. At the same time short legs 48 of thedisc 32 extend through recesses 49 of the disc 26 and also throughrecesses 50 of the disc 27. It will be apparent therefore that becauseof the position of the short legs 48, the discs 26 and 27, in oneposition, will be locked together and also locked to the disc 32 andhence also locked to the spindle 34. Consequently when the inner knob 16is rotated, rotating as it necessarily must the disc 26, the spindle 34will also be rotated and, in turn, will retract the latch 15 inasmuch asthe spindle 34 in this position of adjustment lies within a square holeof a bushing forming part of the latch mechanism as illustrated inFigure 1. Rotation of the inner knob 16 will manipulate the latchmechanism sufficient to withdraw a latch bolt 56. When inner operatingassembly 13 is in unlocked position, the latch bolt may also bewithdrawn by the outer operating assembly 14 which includes a squaretube 58 adapted to engage a square hole in an outside portion 59 of thebushing 55.

When it is desired to lock the door against opening by manipulation ofthe outer knob assembly, the inner knob 16 is drawn inwardly from theposition shown in Figure 3 to the position shown in Figure 4. This isthe locked position. When the inner knob is drawn to this position, theshank diameter 19 of the knob moves a short distance from right to left.The distance is such that the disc 27 and the disc 26 are pulled towardthe left a distance sufiiciently great that the recesses 50 and 49 aredrawn clear of the short legs 48. At the same time the recess 47 is notdrawn clear of the long leg 45 of the disc 32 and the long leg remainswithin the arcuate recess 46 of the disc 26 in each case. After the knobis thus pulled in, it is rotated in a clockwise direction a shortdistance, limited by the length of the arcuate recesses 46, as viewed inFigure 5. The knob is permitted to rotate because although the long legs45 lie within the recesses 46, they initially occupy a position at oneend of same before rotation and at the other end of same after rotation.The degree of rotation is sufficient to shift shallow cup or dishedportions 57 on the disc 26 to a position beneath the ends of short legs48 in each case. When the cup on each side thus falls beneath therespective short leg 48, the coiled spring 28 will shift the disc 26slightly so that the short leg falls within the cup and is therereleasably held. This is to prevent inadvertent walking off or climbingof the parts out of locked position.

Further, when the inner knob assembly is pulled from right to left, thedisc 27 in being pulled from right to left is moved to a new positionwherein flanges 60 on the disc 27 fall into slots 61 in a mid-portion ofthe binder plate 20. sarily a stationary portion of the lock deviceinasmuch as it is a portion non-rotatably fastened to the door.Therefore, when the flanges 6t) anchor themselves non-rotatably in theslots 61, the disc 27 cannot be rotated. Since the long legs 45 of thedisc 32 lie in the recesses 47, the disc 32 cannot be rotated andconsequently the spindle 34 cannot be rotated. Also the bushing 55' isblocked from rotation by the agency of the square spindle 34. Hence thelatch mechanism cannot be operated by the outer operating assembly 14 towithdraw the latch bolt 56. The locking just described, however, doesnot prevent the short rotational movement of the inner knob 16 and disc26 a distance sufficient to place the cups 57 beneath the short legs 48.Consequently the short rotational motion is one which temporarilyretains the parts in the blocking position described aided by action ofthe spring 28.

When the device is to be unblocked, the inner knob 16, as viewed inFigure 5, is rotated a short distance counter-clockwise. Rotation of theknob causes rotation of the disc 26 and sloping walls of the cup 57cause the short legs 48 to ride up to the surface of the disc afterwhich as the disc continues to be rotated its short permitted distance,the recesses 49 again align themselves with the short legs 48. When thisis accomplished, the spring 28 urges the discs 27 and 26 from left toright, pushing the recesses 49 and 50 into positions of engagement withshort legs 48 in each case. At the same time the flanges 6b are pushedclear of the slots 61 and the disc 27 is no longer engaged non-rotatablywith the binder plate or stationary portion of the lock. The parts havethus been returned to initial unlocked position wherein the squarespindle is free to rotate and wherein the outer knob assembly 14 cantherefore again be rotated to withdraw the latch bolt 56.

When the device is installed in the door 10, the outside or outer knobassembly 14 is interconnected to the inner knob assembly. This isaccomplished by providing the outer knob assembly with a binder plate 65which has attached thereto a pair of threaded sleeves 66. Bolts 67extend through the inner binder plate and are threadedly attached to thesleeves 66 thus fixing the binder plates in position on the door.

Additionally the outer knob assembly is provided with a shank or spindle68 having a portion 69 of the shank of somewhat reduced diameterrotatable within a bushing 70 in much the same manner as is found in theinner knob assembly. The shank is secured within the bushing by theinterposition of a washer 71 and snap ring 72. The square tube 58 isfixed non-rotatably in a square aperture at the inner end of the shankand by means of a disc 77 at the outer end. Because of the sliding fitof the square tube in the bushing 59, the tube can slide in or out toaccommodate the outer operating assembly to doors of differentthickness. The coiled spring 73 by pressing between the inside end ofthe shank and a washer 74 tends to press the washer against the housingof the latch mechanism 15 thereby to urge the engagement of the squaretube 58 with the bushing Alignment of the spindle 34 and tube 58 isimproved by means of the rotating fit of the rounded end 37 in the tube.

An outer knob 78 is provided with a cap 79 in which is a centralaperture St) in alignment with an interior bore 75 of the tube 58. Asillustrated in Figure 2, a long instrument such as a wire 81 may beinserted through the cap and the tube 58 so as to be pressed against therounded extension 37 of the square spindle 34 by which means the spindlecan be pushed endwise from right to left as viewed in Figure 2 so as topush the square portion of the spindle 34 out of engagement with thebushing 55.

This mid-portion of the binder plate is neces.

When the square spindle has thus been pushed out of engagement, theouter knob assembly when rotated can withdraw the latch bolt 56, thusopening the door even though the spindle 34 is locked against rotationby the manipulation of the inner knob assembly 16.

Push release lock in another embodiment chosen to illustrate theinvention, illustrated in Figures 6, 7 and 8, the inner knob assembly isso arranged that the inner knob assembly is pushed toward the door inorder to set the privacy lock and then rotated a small fraction of arevolution in order to secure the privacy lock in locked position.Figure 6 shows the relationship of the parts in unlocked position andFigure 7 the relationship or" the parts in locked position.

in the modified form the inner operating assembly 13 comprises the sameinner knob 16, shank 17, and parts thereof, as was described inconnection with Figures 3 and 4 and is designed to be attached to thedoor 10 by the same binder plate 2% and appropriate bolts.

In the form of Figures 6, 7 and 8 there is provided a disc 85 in whichis an aperture 86 having a flat side which is adapted to secure the disc85 non-rotatably on the portion 1 of the shank by engagement of the flatside with the flat face 23, the disc being there secured by the snapring 88. Another disc 89 is normally pressed against the disc 85 by acompression spring 90 kept on the square shaft 34 by a washer 91.

A disc 92 is provided with long legs 93 which extend through arcuaterecesses 94 in the disc 85 and substantially rectangular recesses 95' inthe disc 89 thus essentially interlocking together the discs 35 and 89except for the freedom of motion allowed by the length of the arcuaterecesses 94.

The disc 92 is additionally provided with short legs 96 which inunlocked position, as illustrated in Figure 6, extend throughsubstantially rectangular recesses 97 in the disc 85 and similarrectangular recesses 98 in the disc 39. Thus in unlocked position thediscs 35 and 89 are in fact interconnected so that one must rotate inunion with the other. Hence, since the disc 8? is provided with a squarehole 99 receiving the square spindle 34, the spindle 34 is lockednon-rotatably to the inner knob 16 when the inner operating assembly isin unlocked position as iilustrated in Figure 6.

Moreover in unlocked position ears 100, two in numher, are in positionsout of engagement with apertures 101 in a dished plate 162 which isdesigned to receive them.

The dished plate 192 is provided on opposite sides with legs 1% havingfeet 104 thereon, the feet being provided with slots 105. These slots,as illustrated in Figures 6 and 7, are designed to engage the flanges 44on the binder plate 20 as previously described, thus rendering thedished plate 1&2 relatively stationary.

When the inner operating assembly of the design illustrated in Figures 6and 7 is to be manipulated to lock the mechanism, the knob 16 is pressedinwardly toward the door from the position of Figure 6 to the positionof Figure 7. Pressing the knob inwardly shifts the disc 85 and the disc89 in a direction from left to right as viewed in Figures 6, 7 and 8 adistance far enough so that the rectangular recesses 98 are moved out ofengagement with the short legs 96 but not so far but what the long legs93 remain in engagement with the rectangular recesses 95. The same shiftin location of the disc 89 is far enough so that the ears 1% move intoengagement with the apertures 101 of the dished plate 102. In this newposition the disc 8d thus becomes interlocked with the dished plate 162which exemplifies the stationary portion of the lock. Hence the spindle34 is locked against rotation and consequently the latch mechanismcannot be manipulated by the outer knob assembly to withdraw the latchbolt 56.

In order to temporarily secure the outer operating assembly in lockedposition, namely, the position of Figure 7, the inner knob 16 and partsattached thereto is permitted a partial rotation throughout the distancelimited by the length of the arcuate recess 94. Let it be assumed thatin unlocked position the long legs 93 occupy a position at the left endof the arcuate recess 94 as viewed in Figure 8. In this position theknob is depressed toward the door and the short legs 96 released fromthe rectangular recesses 98 and 97, respectively, of the discs 89 and85. The short legs 96 will then clear the adjacent face of the disc 35.The knob 16, as viewed in Figure 8, is then rotated in a clockwisedirection the distance permitted by the travel of the long legs 93 inthe recesses 94, that is, until the long legs abut the righthand end ofthe respective recesses. Rotation throughout this distance is sufiicientto shift the position of the disc 85 rotatably until the short legs falladjacent depressions 106. At this point the short legs will be urgedinto the bottoms of the depressions by pressure of the spring 90 againstthe disc 89 and from the disc 89 to the disc 85, thus urging the disc 85toward the short legs. This adjustment is advantageous in prohibitingclimbing of the short legs which might be effected by a jerkymanipulation of the handle, thereby inadvertently unlocking the lockfrom the exterior.

To release the blocking mechanism which is the relationship of the partsblocking rotation of the spindle 34 and hence retraction of the latchbolt 56, the knob 16, as viewed in Figure 8, is rotatedcounter-clockwise a distance snfiicient to shift the long legs 93 fromthe right end of the arcuate recesses to the left end. Rotationthroughout this distance slides the short legs out of the depressions1436, the legs riding up on the sloping Walls of the depressions, untilthe short legs 96 again fall into a position of alignment with therectangular recesses 97 and 9 8, respectively, of the discs 85 and 89.The discs as viewed in Figures 6, 7 and 8 will then be urged from rightto left to positions wherein the short legs again reengage both discs,interlocking all three discs together. During this same movement theears 100 of disc 89 are shifted out of engagement with the apertures191, thus freeing the square shaft 34 from its blocked or lockedposition. Consequently, inasmuch as there is no blocking of rotation ofthe latch mechanism, the latch mechanism can again be withdrawn byoperation of the outer operating assembly.

Inasmuch as there is nothing other than the spring 90 tending to urge,as viewed in Figures 6, 7 and 8, the square spindle 34 endwise from leftto right into a position of engagement with the latch mechanism, allthat is necessary to release the latch mechanism for manipulation by theouter operating assembly is to shift the spindle 34 endwise from rightto left the same as in the embodiment of the invention described inconnection with Figures 1 through 5, inclusive. Consequently, theidentical structure, as described in Figure 2, facilitating release bythe wire 81, can be employed in connection with the form of the lockillustrated in Figures 6, 7 and 8.

Either form of the invention may be constructed so as to be unlockedfrom the exterior by means of key actuation instead of some otherinstrument such as the wire 81 described in connection with Figure 2.Key actuation is illustrated by a structure disclosed in Figures 9, 10,11 and 1-2. As there illustrated, an inner knob assembly 129 is designedto be pulled away from the door in order to unlock the device and to bepushed toward the door in order to lock the device. In Figures 9 and 10the inner knob assembly is shown in locked position.

The inner knob assembly includes a shank 121 having a reduced portion122 rotatably mounted in a bushing 123. 'On the reduced portion 122 arethe cooperating discs 85, 89 and 92 as described in connection withFigures 6, 7 and 8, these being shown coop-erable with the dished plate102. These parts operate as previously described in connection withFigures 6, 7 and 8.

In this form of the invention an outer knob assembly is provided with ashank 131 which is non-rotatably secured to a hollow square shaft 132.The shaft 132 fits in a square aperture in the bushing 59 formanipulation of the latch in the same manner as heretofore described.

The square shaft 132 fits into the square hole in the disc 89.

Since the inner knob assembly must be free to rotate throughout the arenecessary for latching the device by manipulation of the inner knobassembly, means must be provided to permit a corresponding amount oflost motion between the inner knob assembly and a solid square rod 133which as shown is operated through a tumbler lock 134 by a key 135.Parts of the lost motion mechanism are illustrated in the exploded viewof Figure 12.

To provide a receptacle for the lost motion mechanism the shank 121 hasa recess 134' therein at the rim of which are flanged portions 135'consisting of identical arcuate parts. A passage 135 extends through thereduced portion 122 to freely accommodate the hollow square shaft 132.Within the recess is a washer 137 having a central aperture 138 which issubstantially larger than the rod 133 permitting it to turn freely inthe aperture. Next to the washer 137 is a square washer 139 havingcorners 140 which are adapted to fit into cut-out portions 141 in thezalls of the recess 134, thereby preventing the square washer fromturning when in place.

Extending outwardly relative to the door are ears 142 on the squarewasher which are designed to be received within arcuate recesses 143 ina disc 144. The location of the ears 142 in the arcuate recesses 143 isclearly shown in Figure 10. It will also be noted that the disc 144 hasa central square recess 145 which snugly accommodates the square rod 133to the end that the disc 144 turns with the solid square rod.

To hold all of the parts of the lost motion mechanism in place a largewasher 146 is provided having slots 147 adapted to receive the flanges135. When all of the parts are properly positioned, the outside edges ofthe flanges 135' may be swedged over the face of the washer 1-46 asillustrated in Figure 10. The washer 146 has a central hole 148comparable in diameter to the hole 138, there being also a hole 149 inthe square washer so that the solid square rod 133 turns freely withinall of these parts.

In operation let it be assumed that the door has been locked by means ofpushing the inner knob assembly 120 toward the door and rotating itthrough the distance permitted by the cooperating discs 85, 89 and 92.This adjustment locks the disc 89 in engagement with the dished plate102 and because the square shaft 132 is nonrotatably received in thedisc 89, the square shaft 132 cannot rotate. Hence the outer knobassembly 130 which carries the square shaft cannot rotate and the dooris barred against opening from the outside.

The door can then be unlatched by rotating the inner knob assembly 121and can also be opened by use of the key 135. When the key is used, itrotates the connected square rod 133 which extends through the center ofthe hollow square shaft 132. Rotation of the rod 133 immediately rotatesthe disc 144 and the inner knob assembly 120 since the ears 142 havealready been moved to the ends of the respective slots 143 by initialrotation of the inner knob assembly 129. The slots 143 provide necessarylost motion inasmuch as the square washer could not be rotated againstthe set position of the key.

Accordingly, the inner knob assembly is caused to rotate by keyactuation a distance permitted by lost motion in the cooperating discs85, 89 and 92, until they are in a position wherein the lock isreleased. The action of the discs is the same as is achieved by manuallyrotating the inner knob assembly 120 through the same distance. It willbe noted that opening or unlocking the lock bv r'neans of the key in theassembly illustrated in Figures 9, 10, 11 and 12 differs from release ofthe lock by the means illustrated in Figure 2 in that the means ofFigure 2 does no more than disengage the square shaft 34 from blockingrotation of the bushing 59, thereby permitting the outer knob assemblyto open the latch. As soon as the wire 81 is withdrawn, the square shaft31 again returns to block rotation of the latch and should the door beslammed it will again lock itself unless in the meantime the inner knobassembly 13, as illustrated in Figure 2, is rotated so as to release thelocking mechamsm.

After unlocking by means of the key 135, the key is ordinarily returnedto its initial position, which movement again shifts the disc 144 thelength of the arcuate slots 143 so that the lost motion mechanism isreset to initial position. This will permit rotation of the inner knobassembly by a corresponding distance in order to lock the lock set fromthe inside without disturbing the key mechanism.

In the construction of Figures 9 and provision has been made forsuitable inclusion of a relatively heavy coil spring 150 by providing aspring keeper or hollow cap 151 adapted to fit into a central aperture152 of the dished plate 102.

Continuous spindle lock outer knob assembly In still another form of theinvention illustrated in Figures 13 through 27 inclusive details areshown of a lock which locks when the inner knob is thrust inward.

In order to facilitate an understanding of the environment in which thenovel inner knob assembly is disposed, as well as to illustrate thenovel combination of outer and inner knob assemblies in this form of theinvention, the essential features of the outer knob assembly will beagain described in connection with Figures 13 through 27.

The outer knob assembly comprises an outer shank 160 which is formedwith a cylindrical section 161 and a conical section 162 having ashoulder 163 therebetween.

The outer end of the shank 169 is formed with a shoulder 164 and a boss165, which said boss 165 is formed with a pair of diametrically disposedtransverse flat grooves 166, the purpose of which willbe explainedlater.

A knob shell 167 is formed with a flanged opening on the inner endthereof, the flange 168 being adapted to enclose the boss 165', and issecurely held in place by a washer 16?. The washer 169 is formed with apair of diametrically opposite inwardly directed ears 171i adapted tofit in the fiat grooves of the boss 165, as above described. Thatportion of the boss 165 which extends outwardly through the washer 169is peened or swedged over to securely hold the washer and the shell 167in position. The shell 167 is also formed with an outer circularaperture 171.

A knob filler 172 is disposed through the opening 171 and abuts againstthe inner surface of the shell 167. A knob insert 173 formed originallywith inwardly extending cylindrical side walls 174 is forced inwardlyagainst the knob filler 172 so that the knob filler 172 acts as aswedging or expanding tool to expand the inner edges of the side wall174 to securely lock the knob insert 173 in place.

The outer shank 160 is also formed with an axial bore 175 adapted toreceive an internally threaded cap 176, and is broached as at 177 toreceive a non-circular, preferably a square shank filler 178.

The inner end of the shank 161) is formed with a pair of oppositelydisposed semi-circular bosses 179 (see Figure spaced apart to form apair of oppositely disposed grooves 179'. A washer 180 is disposed overthe semi-circular bosses 179 and held securely in place by means of asnap ring 181.

The washer 180 is formed with inwardly directed oppo- '10 sitelydisposed ears 182 adapted to fit in the grooves 179' and to act as stopsto prevent the shank filler 178 from coming out of the bore 179.

A rose insert 183 having attached to it two internally threaded bindingposts 184 is mounted on a cylindrical rose bushing 185 which abutsagainst a flange 186 of a rose 187 and is held in place by the outeredges 188 of rose 187, being crimped over the outer edges 189 of roseinsert 183. Shank rotatably engages with cylindrical rose bushing 185,rose flange or shoulder 186 abutting against shank shoulder 163, andshank 160 is retained in engagement with cylindrical rose bushing bymeans of washer 1S0 fitting over the end of shank 160 and against roseinsert 133, said washer 180 being retained in position by the snap ring181, as above mentioned, the snap ring being seated in an annular groovein the end of shank 160.

As will be seen from Figure 13, the washer 180 has a major diametergreater than the diameter of the aperture in the rose insert 183 so thatwhen the washer 180 is secured in place by the snap ring 181 the entireouter assembly is secured in one unit.

A lost motion device, the parts of which are illustrated in Figure 26,comprises a circular slotted washer 1911 and a square tabbed washer 191.The washer 190 is formed with a square hole 1% and arcuate slots 193.The square washer 191 is formed with a circular hole 19 having adiameter larger than the diagonal of the square hole 1% and is providedwith oppositely disposed tabs 1%.

The two washers are assembled contiguously with the tabs 1% reposing inthe slots 1%, in which slots the tabs are afforded rotational play. Whenthe tabs engage either end of the slots the rotational play isinterrupted and simultaneous movement of both washers then ocours.

The square hole 192 engages a square spindle 196, hereinafter described,and the circular hole 194 is large enough to clear the spindle. Thesewashers in their assembled relationship are disposed inside the bore 179of the shank 1611 between the inner end of the cap 176 and the outer endof the shank filler 1723, the circular washer 1% being in contact withthe cap and the square washer 191 being in contact with the shankfiller. Reversal of position of the two washers 199 and 191 can beemployed with equal effectiveness, and other suitable forms of lostmotion mechanism can be employed.

The general purpose of this delayed action mechanism, as will more fullyappear later, is to permit partial rotation of a key in a cylinder lock197 (later described) to actuate that lock prior to rotation of theshank 160. Further rotation of the key in the same direction will causerotation of the shank 160 by reason of the fact that when the play ofthe tabs 195 in the slots 193 is taken up, the washer 190 which isrotated by the spindle 196 will impart rotation to the square washer191, and the squared corners of the washer 191 engage against thebroached portion 177 of the shank bore 175.

The lost motion mechanism in the outer knob assembly is not essential tooperation of the lock but does furnish a desirable improved functiontherein in that continued rotation of the key after actuation of thecylinder lock 17 will retract the latch bolt without the necessity ofgrasping the knob to rotate it.

The filler 172 is formed with a longitudinal bore 1% adapted to receivethe cylinder lock 197 which is formed with a reduced threaded end 19$adapted to cooperate with the cap 1'76. The cap 1745 has a largerdiameter than. the bore 1% so that it will shut against the inner end ofthe fiiler 172 to assist in retaining the lock 197 in the knob assembly.The cap 176 and the threaded section 199 also provide convenient meansfor adjusting the tolerance between the lock 197 and its housing whichhas been identified as the knob filler 172.

A ball seat 200 is formed in the outside surface of the lock 197. Thefiller 172 is formed with a transverse bore 201 adapted to receive aspring loaded ball 202 which cooperates with the seat 200. The purposeof such an arrangement is so that the user of the door lock assembly canreadily position the cylinder lock 197 for easy key extraction.

The square shank filler 178 is formed with an axial, non-circular(square) hole 203 adapted to receive a corresponding non-circular(square) tubular spindle 204. The tubular spindle 204 is formed withoutwardly flared shoulders 205 so that it cannot be pulled away from thefiller 178.

The non-circular (square) spindle 1% (previously identified) extendsthrough the square tubular spindle 204 and is rotatable within andindependently of the spindle 204. The spindle 196 is much longer thanthe spindle 204 and is formed with an inner flattened and widened end206 adapted to register with a transverse slot 297 (Figure 13) in theend of the cylinder lock 197 so that rotation of the cylinder lock 197rotates the spindle 196.

A compression spring 233 bears at one end against the inner wall of cap176 and at its other end against the shoulder 209 (Figure 27) of thewidened end of the spindle 196 to hold said spindle in the cylinder lock197.

The arrangement of spindle 196, cap 176, spring 208 and lock 197contributes ease of assembly and adjustment of the lock, as Well assimplified convenience in substituting or removing the lock for repair.

In assembling the spring is slipped on the spindle 196 with its smallend against the shoulder 209 of the spindle. The spindle is theninserted through the cap. The hole 210 through which the spindle passesis square to accommodate the spindle with a sliding but relativelynon-rotating fit. The flattened end 206 of the spindle is inserted inthe slot 207 of the cylinder lock. This slot is preferably formed in across with actually two slots at a 90 angle intersecting in the centerso that the flattened end of the spindle may engage in either one of theslots.

The spindle is rotated while being held back to compress the spring andkeep the end 206 out of the lock, screwing the cap onto the lock tight,then it is backed off to assure freedom of rotation of the cap and lock,and the end 206 is allowed to enter the selected slot.

To remove the cylinder lock, the spindle is pulled free of the same, thespindle is rotated to unscrew the cap from the lock, and the lock canthen be withdrawn. Obviously, as shown, the cavity in the cap must bemade long enough to afford space for the function described.

When it is desired to mount the assembly on a door 211,

a hole 212 is bored into the door through the end thereof 3 andintersects a hole 2113 running perpendicularly through the door. Asuitable latch assembly, designated generally 214, is inserted throughthe hole 212 and extends into the hole 213. The binding posts 184 aredisposed through suitable openings in the latch assembly 214, and abinding plate 215 is secured against the opposite side of the door bymeans of bolts 216.

The tubular spindle 204 passes through the latch assembly 214 andengages therewith in any conventional manner (not illustrated) toretract or permit advancement of the latching element.

A similar outer knob assembly is shown and described in U. S. Patent No.2,484,961 except that the lost motion mechanism (Figure 26) was notillustrated in the prior patent.

Inner knob assembly The inner knob assembly comprises an inner shank,designated generally 216, which is formed with a cylindrical section 217and an outwardly tapered section 217 having a shoulder 218 therebetween.

The outer end of the shank 216 is formed with a shoulder 219 and a pairof semi-circular bosses 220 spaced apart to form a groove 221therebetween. The shank 216 is formed with a longitudinal bore 222.

An inner knob shell 223 is formed with a flange 224 which fits betweenthe shank shoulder 219 and an annular portion 225 of a washer 226, thewasher being fixedly secured in its relation to the shell and shank byarcuate segments 227 of the shank upset over the washer. The flange 224-is formed with fiat sides 228 adapted to cooperate with correspondingflat sides 229 on the bosses 220 to prevent relative rotation betweenthe shell 223 and the shank 216. Diametrical spiders 230 of the washer226 fit into the grooves 221 to interlock the washer with the shank 216and the knob shell 223. A cap 231 is secured by press fit into t .eshell 223.

The shank 216 is formed with a counterbore 232 adapted to receive acooperating lost motion mechanism 233. This mechanism comprises partsidentical to those illustrated in Figure 26 and described in connectionwith the outer knob assembly. The same reference numerals will beapplied to the lost motion mechanism here. Thus, a circular washer 190having a squared center hole 192 slidably but non-rotatably receivingthe spindle 196 is free to rotate in the counterbore. The square washer191 is disposed in the same counterbore with the tabs 195 engaged in thearcuate slots 48. The squared corners of the washer 191 non-rotatablyengage in a complementary broached bore 234 of the shank 216. The washer226 retains the washer 191 in its operative relationship with the washer190. There is thus provided a slight lost motion in rotation between theshank-and-shell and the spindle 196. Other suitable forms of lost motionmechanism may be employed to accomplish the same result.

On the cylindrical portion 217 of the shank 216 are diametricallydisposed axial grooves 235 which terminate in circumferential grooves236 formed at approximately 90 to the axial grooves.

Mounted on a reducer inner end portion 237 of the shank 216 is a lockingwasher 238 rotatably held against a shoulder 239 of the shankcylindrical portion 217 by a snap ring 240. The washer 238 has radiallyand axially inwardly extending legs 241 which are retained in slots 242formed in a bushing 243.

The bushing 243 is disposed in the tapered portion 244 of an inner rose245 and is rotatable therein. This bushing 243 has a reduced cylindricalportion 246 on which a ring 247 is disposed. The ring 247 has inwardlyextending stops 248 which also ride in the slots 242. The ring 247 islodged between a rose insert 268 and a shoulder 249 on the bushing 243,and held in place by the cooperation of such parts. The rose 245 androse insert 268 may be rigidly connected as a sub-assembly with thebinding plate 215 as is shown in Figure 13 where machine screws 250 areemployed.

The cylindrical portion 217 of the shank 216 slidably and rotatablyengages a bore 251 of the bushing 243. At the inner end of the bore 251is disposed a washer 252.

I This washer 252 has outwardly extending ears 253 which key into slots254 of the bushing 243, these slots 254 being radially offset from theslots 242. A square hole 255 is provided for slidable but non-rotationalengagement with the tubular spindle 204. The washer 252 is held withinthe bore 251 by a snap ring 256. Between the washer 252 and the lockingwasher 233 is disposed a compression spring 257. This compression spring257 tends to force the shank 216 to the right and outwardly of the bore251, therefore tending to bring the legs 241 of the locking washer 238out of a locked engagement with the binding plate 215 next discussed.

The binding plate 215 is formed with complementary slots 258 whichreceive the legs 241 of locking washer 238 when the shank 216 and thelocking washer 238 together have been pushed into locking position, thuspreventing tubular spindle 204 from turning, by coordinatign of theparts described in the paragraph immediately a ove.

Operation To lock the door the inner knob shell 223 is pushed inwardlyfrom the position shown in Figures 13 and 17 to the position illustratedin Figure 21, whereupon the cylindrical portion 217 of the shank 216slides inwardly in the bore 251 with the stops 248 of the ring 247remaining stationary as the walls of grooves 235 of the shank slide by.With the parts in the position shown in Figure 21, the legs 241 of thelocking washer 238 engage in the slots 258 of the binding plate 215against the axial resistance of spring 257. The inner knob shell is thenslightly rotated, as permitted by the delayed action mechanism 233(washers 1% and 191, etc.) and the rotatable relationship between shank216 and locking washer 238. See Figure 23. More specifically, therotation of the knob and shank assembly will rotate square washer 191,the tabs 195 of which ride in the arcuate slots of the washer 190, andthe circumferential grooves 236 of the shank 216 will be rotated intoengagement with the stops 243 of the ring 247.

Manual relinquishment of the knob and shank assembly at this time willthen leave the circumferential grooves in engagement with the stops 248,thus securing the parts in a locked position with the spring 257exerting pressure through the agencies of the washer 238 and shankportion 217 against the stops 248.

To summarize the locking position of the parts, the movement of theinner shell and shank from extended (outward) to retracted (inward)position brings the locking washer 238 into non-rotatable relationshipwith the fixed binding plate 215. Inasmuch as the locking washer isalways in non-rotatable, but slidable, relationship with the bushing243, and the washer 252 is also always in non-rotatable relationshipwith the bushing 243, the washer 252 is held against rotation, andconsequently, also, the tubular spindle 204 is held against rotation andthe latch 214 cannot be withdrawn. The ring 247 being at all timesrestrained against axial movement and against rotational movementrelative to the bushing 243, enables the minor rotational movement ofthe shank 216 to bring the circumferential grooves 236 thereof intoaxially restraining engagement with the stops 248 of the ring 247,holding the parts in the locking position.

The bushing 243 plays an important part in the device. It rotates withinthe rose 245 and rose insert 268 and at the same time houses spring 257and retains ring 2417, slidably houses locking washer 233 during lockedor unlocked position, slidably houses shank 216 during extended(unlocked) positioning of said shank 216, rotatably houses shank 216during inward (locked) positioning of said shank 216 and turns the latchactuating tubular spindle 204 through the medium of washer 252.

The door lock may be unlocked either by a key from the outside or byrotating the inner knob.

When the cylinder lock assembly 198 is rotated by a key in a directioncounter to the turn given the inner knob when locking, the spindle 196is rotated, and washer 190 in the inner knob assembly, by virtue of itssquare hole 192 engaging the spindle 196, is rotated. The washer 190rotates the washer 191 and this in turn rotates the shank 216. Thecircumferential slots 236 are thus disengaged from the stops 243, andthe axial grooves 235 come into alignment with these stops. Spring 257then ejects the shank, at which time the washer 238 and its tabs 241will be withdrawn from locking engagement with the slots 258 of bindingplate 215.

The same unlocking action is accomplished by turning the inner knobassembly counter-clockwise or opposite from the retaining motion.

When the locking washer 238 is disengaged from the binding plate 215,the hollow spindle 204 may be rotated to operate the door latchmechanism 214.

From the outside, by key, the small, longer spindle 196 can be thenrotated, and this rotation will be communicated through the delayedaction washers 190 and 191 in the outer knob assembly and the broachedbore of the shank 160 to the hollow spindle 204.

If, instead of using the key for the purpose last described, the outerknob is turned after the lock is un- 14 locked, the rotation is impartedthrough the shank 169 and the filler 178 to the hollow spindle 204without utilizing the delayed action washers and 1%.

When in the extended (unlocked) position, rotation of the inner knobthrough the shank 216 results in rotation of the ring 247 as the stops248 are in the axial grooves 235 of the shank as well as in the slots242 of the bushing 243. Therefore, bushing 243 will be rotated, which inturn rotates washer 252 as the ears 253 are in the slots 254, thevarious parts then being rotationally keyed together. The washer 252 byreason of the broached hole 255 engaging the hollow spindle 204 willrotate the latter.

In Figure 28 is shown a binding plate 260 and a locking washer 261 whichcan be used in place of and which perform the same functions as thebinding plate 215 and locking washer 238, respectively.

Except for attaching dimples, the binding plate 260 is flat instead ofbeing formed with a depressed contour and is provided with slots 262having inwardly struck plane ledges 263.

The locking washer 261 has the same form as the locking washer 238except that the axial extensions of the legs 241 are omitted. In thiscase, the legs 264 terminate at their radial extremities 265.

During the locking phase of operation, the locking washer 261 is thrusttoward the binding plate 260, and the legs 264 enter the slots 262 andengage the ledges 263, thus preventing the locking washer from rotatingso long as it is held in the engaging position.

This modified form of binding plate and locking Washer combinationoffers the advantage of simplicity and, from the standpoint ofmanufacturing, is preferable to the form first shown and described. Oneis equivalent to the other.

In its essential aspects the device for the purposes of illustration ofthe invention and not by way of limitstion comprises an outer knobassembly retained in position by a binding plate 215 which also servesas a rotational restraining means for the inner knob assembly when in alocked position and as an attachment means for the inner knob assembly.Inner and outer knob assemblies are operatively associated with atubular spindle ms.

The inner knob assembly in the extended position is free to rotate thetubular spindle which extends from the inner knob assembly through alatch unit into the outer knob assembly. In the retracted or inwardposition, members of the inner knob assembly mechanism engage withmating provisions in the binding plate preventing rotation or" thehollow spindle. The inner knob assembly may be retained in the retractedor locking position by a slight rotation of the knob and shanksubassembly which only is free to rotate independently of the hollowspindle when the inner knob assembly is in this innermost position. Theeffect of this slight rotational movement of knob and shank sub-assemblyis to retain the inner knob assembly in locked position and to resistany rotation or impact forces which would tend to dislodge the lockedparts.

There has thus been described a relatively simple privacy lock setfeaturing a series of independent discs in such relationship one withrespect to another that by interconnecting them the lock is adjusted inone position and by disconnecting certain of the relationships the lockis adjusted to another position, locked or unlocked depending upon theinitial construction and arrangement of the discs. The parts have hereinbeen described as discs chiefiy because as such they may be made ofrelatively small size and circumference to the end that they may becompacted neatly Within a very small housing and hence encourage aninexpensive construction and convenient installation. Locking andunlocking of the lock set are accomplished by manipulation of the innerknob. It is more or less natural to push or pull upon the knob if thatmovement is permitted and the natural tendency is to rotate the knob.Thus persons relatively unacquainted with its mechanism can readilylearn its operation. Moreover, after being locked, the natural tendencyof a person opening a door is to turn the knob and in the constructionherein disclosed turning the knob is the motion which in fact unlocksthe lock device. At the same time accidental lock-out is avoided byproviding enabling means through the outer knob assembly for opening thedoor under special circumstances. Moreover, the device is well suited todoors of different thickness. For example, in the case of Figure l thespindle 34 will assume its own position subject to shifting to operativeposition by means of the spring 9t Hence the lock will make its ownadjust ment depending upon the width of the door and the inner and outeroperating parts may be assembled together in the door merely by drawingup sumciently on the bolts.

While I have herein shown and described my invention in what I haveconceived to be the most practical and preferred embodiment, it isrecognized that departures may be made therefrom within the scope of myinvention, which is not to be limited to the details disclosed hereinbut is to be accorded the full scope of the claims so as to embrace anyand all equivalent devices.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

l. A door lock comprising a latch bolt, a stationary portion, an outeroperating device and an inner operating device operatively engaging saidlatch bolt, said inner operating device having axial movement torespective extended and retracted axial positions, either of saiddevices being operable to actuate the latch bolt when the inneroperating device is in one axial position, a blocking mechanismoperatively associated with the inner operating device adapted uponmovement of the inner operating device when in said other position toblock the outer operating device against latch bolt actuation and toretain said inner operating device in said other axial position, saidblocking mechanism being releasable upon further rotation of the inneroperating device, said blocking mechanism comprising coaxial members andinterlocking elements on said members, said members in one position ofrotation when the inner operating device is in said one axial positionforming an engagement between the operating devices, said members inanother position of rotation forming a disengaged relationship betweenthe operating devices and an engagement between the outer operatingdevice and the stationary portion of the lock.

2. A door lock comprising a latch bolt, a stationary portion, an outeroperating device and an inner operating device operatively engaging saidlatch bolt, said. inner operating device having axial movement torespective extended and retracted axial positions, either of saiddevices being operable to actuate the latch bolt when the innerope-rating device is in one axial position, a blocking mechanismoperatively associated with the inner operating device adapted uponmovement of the inner operating device when in the other axial positionto block the outer operating device against latch bolt actuation and toretain said inner operating device in said other axial position, saidblocking mechanism comprising coaxial members having elements thereonadapted to have interlocked relationship when the inner operating deviceis in said one axial position wherein the inner and outer operatingdevices are non-rotatably attached to each other and in latch actuatingengagement, said elements having a mutually released relationship uponrotation of the inner operating device when the inner operating deviceis in said other axial position wherein the inner operating device isdisengaged from latch actuation and one of said members is releasablyengaged in non-rotatable relationship with the outer operating deviceand the stationary portion of the lock, said elements being disengagedfrom the stationary portion and re-engaged one with another upon furtherrotation of the inner operating device.

3. A door lock comprising a latch bolt, a stationary portion, an outeroperating device and an inner operating device operatively engaging saidlatch bolt, said inner operating device having axial movement torespective extended and retracted axial positions, either of saiddevices being operable to actuate the latch bolt when the inneroperating device is in one axial position, a blocking mechanismoperatively associated with the inner operating device and adapted uponmovement of the inner operating device when in said other axial positionto block the outer operating device against latch bolt actuation and toretain said inner operating device in said other axial position, saidblocking mechanism comprising a plurality of coaxial discs havingrotationinhibiting engagement in one axially shifted position and beingreleased from said engagement in another axially shifted position.

4. A door lock comprising a latch bolt, a stationary portion, an outeroperating device and an inner operating device operatively engaging saidlatch bolt, said inner operating device having axial movement torespective extended and retracted axial positions, either of saiddevices being operable to actuate the latch bolt when the inneroperating device is in one axial position, a blocking mechanismoperatively associated with the inner operating device and adapted uponmovement of the inner operating device to said other axial position toblock the outer operating device against latch bolt actuation and uponrotation of said inner operating device while in said other axialposition to maintain said blocking relationship, said blocking mechanismcomprising a plurality of coaxial discs, one of said discs beingattached to the inner operating device, another of said discs beingnon-rotatably attached to the outer operating device, a third discoperatively associated with the other two discs, these three discshaving one adjustment wherein when the inner operating device is in saidone axial position all discs are locked together and another adjustmentwherein when the inner operating device is in said other axial positionthe inner operating device disc is rotatably disconnected from the outeroperating device disc, the outer operating device being then interlockedwith the stationary portion of the lock.

5. A door lock comprising a latch bolt, a stationary portion, an outeroperating device and an inner operating device operatively engaging saidlatch bolt, said inner operating device having axial movement torespective extended and retracted axial positions, either of saiddevices being operable to actuate the latch bolt when the inneroperating device is in one axial position, a blocking mechanismoperatively associated with the inner operating device adapted uponmovement of the inner operating device when in said other position toblock the outer operating device against latch bolt actuation and toretain said inner operating device in said other axial position, saidblocking mechanism being releasable upon further rotation of the inneroperating device, said blocking mechanism comprising coaxial members andinterlocking elements on said members, said members in one position ofrotation when the inner operating device is in said one axial positionforming an engagement between the operating devices, said members inanother position of rotation forming a disengaged relationship betweenthe operating devices and an engagement between the outer operatingdevice and the block ing mechanism, and means extending axially betweenthe outer operating device and the blocking mechanism enablingunblocking of the outer operating device for latch operation.

6. A door lock comprising a latch bolt, a stationary portion, an outeroperating device and an inner operating device operatively engaging saidlatch bolt, said inner' operating device having axial movement torespective extended and retracted axial positions, either of saiddevices being operable to actuate the latch bolt when the inneroperating device is in one axial position, a blocking mechanismoperatively associated with the inner operating device and adapted uponmovement of the inner operating device when in said other axial positionto block the outer operating device against latch bolt actuation and toretain said inner operating device in said other axial position, saidblocking mechanism comprising a plurality of coaxial discs having onerelationship when the inner operating device is in said one axialposition wherein one of said discs is in engagement with said inneroperating device, another of said discs is in non-rotatable engagementwith the outer operating device and another of said discs is adapted tohave a nonrotatable engagement with said first two discs wherein bothoperating devices are operatively connected to the latch bolt, saidsecond and last identified disc being interlocked to the stationaryportion of the lock when the inner operating device is in said otheraxial position wherein said outer operating device is blocked from latchbolt actuation, said blocking being releasable by further rotation ofthe inner operating device, and means extending axially between theouter operating device and the blocking mechanism enabling unblocking ofthe outer operating device for latch bolt operation.

7. A door lock comprising inner and outer operating assemblies, theinner operating assembly being axially movable to extended and retractedpositions. means associated with said operating assemblies adapted toactuate a latch bolt upon rotation of either of said operatingassemblies, means associated with said inner operating assembly adaptedto block latch bolt actuating rotation of the outer operating assemblywhen said inner operating assembly is in one of the positions and tofree said outer operating assembly for latch bolt actuating rotationwhen said inner operating assembly is in another position, catch meanscomprising relatively rotatable members mounted on the side of the doorlock adjacent the inner operating assembly and operatively associatedwith said inner operating assembly, one of said rotatable members beingoperable by rotative motion of said inner operating assembly, said catchmeans being adapted when in engagement to releasably hold said inneroperating assembly in the position which blocks the latch bolt actuatingrotation of the outer operating assembly, and means Within said outeroperating assembly enabling unblocking of said outer operating assemblyand thus free said outer operating assembly for latch bolt actuatingrotation.

8. A door lock comprising inner and outer operating assemblies, theinner operating assembly being axially movable to extended and retractedpositions, means associated with said operating assemblies adapted toactuate a latch bolt upon rotation of either of said operatingassemblies, means associated with said inner operating assembly adaptedto block latch bolt actuating rotation of the outer operating assemblywhen said inner operating assembly is in one of the positions and tofree said outer operating assembly for latch bolt actuating rotationwhen said inner operating assembly is in another position, catch meanswithin said inner operating assembly operable by rotative motion of saidinner operating assembly adapted to releasably hold said inner operatingassembly in the position which blocks the latch bolt actuating rotationof the outer operating assembly, yieldable means adapted to urge saidinner operating assembly into said other position wherein the outeroperating assembly is freed for latch bolt actuating rotation, and meanswithin said outer operating assembly enabling unblocking of said outeroperating assembly and thus free said outer operating assembly for latchbolt actuating rotation.

9. A door lock comprising inner and outer knob assemblies, the innerknob assembly being axially movable to extended and retracted positions,means associated with said knob assemblies adapted to actuate a latchbolt upon rotation of either of said knob assemblies, means associatedwith said inner knob assembly adapted to block latch bolt actuatingrotation of either knob assembly upon retracted positioning of saidinner knob assembly and to free said assemblies for latch bolt actuatingrotation upon extended positioning of said inner knob assembly, catchmeans within said inner knob assembly operable by rotative motion ofsaid inner knob assembly and adapted to releasably hold said inner knobassembly in retracted position, yieldable means adapted to urge saidinner knob assembly into extended position when the catch means arereleased, a rotatable key actuatable lock associated with said outerknob assembly, and means interconnecting said rotatable lock and saidcatch means adapted to communicate key rotation of said rotatable lockto said catch means to release the same and free said inner knobassembly for movement to said extended position where both said knobassemblies are free for latch bolt actuating rotation.

10. A door lock comprising inner and outer knob assemblies, the innerknob assembly being axially movable to extended and retracted positions,means associated with said knob assemblies adapted to actuate a latchbolt upon major rotation of either of said knob assemblies, meansassociated with said inner knob assembly adapted to block major rotationof either knob assembly upon retracted positioning of said inner knobassembly and to free said knob assemblies for major rotation uponextended positioning of said inner knob assembly, catch means withinsaid inner knob assembly adapted to releasably hold said inner knobassembly in retracted position, said catch means comprising mutuallyengageable stop elements adapted to be engaged or disengaged by relativelongitudinal and minor relative rotative movement, the longitudinalmovement occurring by axial movement of said inner knob assembly, andmeans for imparting said minor rotative movement, yieldable meansadapted to urge said inner knob assembly into extended position When thecatch means are released, a rotatable key actuatable lock associatedwith said outer knob assembly, and means interconnecting said rotatablelock and said catch menas adapted to communicate key rotation of saidrotatable lock to said catch means to release the same and free saidinner knob assembly for movement to said extended position where bothsaid knob assemblies are free for major rotation.

11. A door lock comprising inner and outer knob assemblies, the innerknob assembly being axially movable to extended and retracted positions,means associated with said knob assemblies adapted to actuate a latchbolt upon major rotation of either of said knob assemblies, meansassociated with said inner knob assembly adapted to block major rotationof either knob assembly upon retracted positioning of said inner knobassembly and to free said knob assemblies for major rotation uponextended positioning of said inner knob assembly, catch means withinsaid inner knob assembly adapted to releasably hold said inner knobassembly in retracted position, said catch means comprising mutuallyengageable stop elements adapted to be engaged or disengaged by relativelongitudinal and minor relative rotative move ment, the longitudinalmovement occurring by axial movement of said inner knob assembly, andlost motion mechanism operatively associated with said stop elements toenable or impart said minor rotative movement, yieldable means adaptedto urge said inner knob assembly into extended position when the catchmeans are released, a rotatable key actuatable lock associated with saidouter knob assembly, and means interconnecting said rotatable lock andsaid catch means adapted to communicate key rotation of said rotatablelock to said catch means to release the same and free said inner knobassembly for movement to said extended position where both knobassemblies are free for major rotation.

12. A door lock comprising inner and outer knob assemblies, the innerknob assembly being axially movable to extended and retracted positions,means associated with said knob assemblies adapted to actuate a latchbolt upon rotation of either of said knob assemblies, means associatedwith said inner knob assembly adapted to block latch bolt actuatingrotation of either knob assembly upon and during retracted positioningof said inner knob assembly and to free said knob assemblies for latchbolt actuating rotation upon extended positioning of said inner knobassembly, catch means within said inner knob assembly operable byrotative motion of said inner knob assembly and adapted to releasablyhold said inner knob assembly in retracted position, yieldable meansadapted to urge said inner knob assembly into extended position when thecatch means are released, a rotatable key actuatable lock associatedwith said outer knob assembly, and a spindle interconnecting saidrotatable lock and said catch means adapted to communicate key rotationof said rotatable lock to said catch means to release the same and freesaid inner knob assembly for movement to said extended position whereboth said knob assemblies are free for latch bolt actuating rotation.

13. A door lock comprising inner and outer operating assemblies, theinner operating assembly being axially movable to extended and retractedpositions, means associated with said knob assemblies adapted to actuatea latch bolt upon rotation of either of said operating assemblies, meansassociated with said inner knob assembly adapted to block latch boltactuating rotation of the outer operating assembly when said inneroperating assembly is in one position and to free said operatingassemblies for latch bolt actuating rotation Wl en said inner operat ingassembly is in another position, said last named means including astationary plate having a stop thereon, and a member adapted to engagewith or disengage from said stop, catch means within said inneroperating assembly adapted to releasably hold said inner operatingassembly in the position which blocks the outer operating assemblyagainst latch bolt actuating rotation, yieldable means adapted to urgesaid inner operating assembly into unlocked position when the catchmeans are released, a rotatable key actuatable lock associated with saidouter operating assembly, and means interconnecting said rotatable lockand said catch means adapted to communicate key rotation of saidrotatable lock to said catch means to release the same and thus freesaid inner operating assembly for movement to the position wherein theouter operating assembly will be free for latch bolt actuating rotation.

14-. A door lock comprising inner and outer operating assemblies, anintermediate plate adapted to abut against the inside of a door in whichthe lock is installed, means extending through the door adapted tosecure the outer operating assembly to the plate, and means attachingthe inner operating assembly to said plate, the inner operating assemblybeing axially movable to extended and retracted positions, meansassociated with said operating assemblies adapted to actuate a latchbolt upon major rotation of either of said knob assemblies, meansassociated with said inner operating assembly adapted to block majorrotation of outer operating assembly when said inner operating assemblyis in one position and to free said operating assemblies for a majorrotation when said inner operating assembly is in another position,catch means Within said inner operating assembly adapted to releasablyhold said inner operating assembly in the position which blocks latchbolt actuating rotation of the outer operating assembly, said catchmeans comprising mutually engageable stop elements adapted to be engagedor disengaged by relative axial and minor relative rotative movement ofsaid inner operating assembly, and means to enable or impart said minorrotative movement,

yieldable means adapted to urge said inner operating assembly into saidother position when the catch means are released, a rotatable keyactuatable lock associated with said outer operating assembly, and meansinterconnecting said rotatable lock and said catch means adapted tocommunicate key rotation of said rotatable lock to said catch means torelease the same and thus free said inner operating assembly formovement to said other position.

15. A door lock comprising inner and outer operating assemblies, a fixedplate intermediate said assemblies, the inner operating assembly beingaxially movable to extended and retracted positions, means associatedwith said operating assemblies adapted to actuate a latch bolt uponrotation of either of said operating assemblies, said means including atubular spindle, means associated with said inner operating assemblyadapted to block latch bolt actuating rotation of the outer operatingassembly when the inner operating assembly is in one position and tofree said operating assemblies for latch bolt actuating rotation whenthe inner operating assembly is in another position, said last namedmeans including a stop on said fixed plate, and a rotatable memberhaving a complementary stop adapted to engage with or disengage from thestop on said fixed plate, catch means within said inner operatingassembly adapted to releasably hold said inner operating assembly in oneposition, yicldablc means adapted to urge said inner operating assemblyinto the other position, a rotatable key actuatable lock associated withsaid outer operating assembly, and a second spindle longer than andpassing through said tubular spindle interconnecting said rotatable lockand said catch means adapted to communicate key rotation of saidrotatable lock to said catch means to release the same and free saidinner operating assembly for movement to said other position where bothsaid operating assemblies are free for latch bolt actuating rotation.

16. A door lock comprising inner and outer operating assemblies, theinner operating assembly being axially movable to extended and retractedpositions, means associated with said operating assemblies adapted toactuate a latch bolt upon major rotation of either of said operatingassemblies, means associated with said inner ope ing assembly andadapted to block latch bolt actuating rotation of the outer operatingassembly when said inner operating assembly is in one of the positionsand to free said operating assemblies for major rotation when said inneroperating assembly is in another of the positions, said inner operatingassembly having a minor rotative movement, catch means within said inneroperating assembly adapted to releasably hold said inner operatingassembly in said one of the positions, said catch means comprisingmutually engageable stop elements adapted to be engaged and disengagedby said axial and sait minor rotative movement of the inner operatingassembly, and means Within said outer operating assembly enabling theunblocking of said outer operating assembly and thus free said outeroperating assembly for late 1 salt actuating rotation.

17. A door lock comprising inner and outer operating assemblies, theinner operating assembly being axially movable to extended and retractedpositions, means associated with said operating assemblies adapted toactuate a latch bolt upon major rotation of either of said operatingassemblies, means associated with said inner operating assembly adaptedto block latch bolt actuating rotation of the outer operating assemblywhen said inner operating assembly is in one of the positions and tofree said operating assemblies for major rotation when said inneroperating assembly is in another of the positions, said inner operatingassembly having a minor rotative movement, catch means within said inneroperating assembly adapted to releasably hold said inner operatingassembly in said one of the positions, said catch means comprisingmutually engageable stop elements adapted

